Alloy



Patented Apr.

ALLOY 7 Edward A. Capillon, Attleboro, Mass and Fred- One object alloycontaining a m can be produced at less cost than alloys.

Another object of an alloy which shall and more resistant -gold alloys,

frames and Jewelry Other objects an will appear from t We have discoverThe Palladium in palladium and mak the alloy is much gold. Moreover,silver is rel .color of white and which shall to permit easy workingwithout softer than,

0110 E. Oorte No Drawing. Application April Serial No. 722,316.

2Claims.

sufficiently soft undue damage to be hard enough to d advantages of theinvention combining gold. The aforesaid alloy consis silver, has a highdegree of resistance and acid attack, b

ut the raristance is e following description. ed that for the purposedeof silver with the part compensates this softness of es the alloyharder, although for example, white v atively inexpensive c1 ting ofpalladium and,

to tarnish not comin optical frames N.,J., "Simon to Newark, N. 1., acorplete. In many cases complete resistance to cor rosion is highlydesirable, and while working to accomplish this result, we discoveredthat the addition to the other metals of a relativelyrsmall gives theunexpected remarkable eii'ect of such a small amount of platinum,slightincrease in cost, which is t where it is desired to provide analloy at about the same .or lower cost than the usual sold alloys. Wehave found that these metals can be comis obtained at only a 1 bined indifl'erent proportions to produce satisis factory alloys. Good alloysmay contain from thirty-five to seventy percent of palladium. and

platinum of which the major portion is palladium, the reminder of thealloy being silver. For example, an alloymay consist of forty-fivepercent 20 of palladium, fifty percent cent of platinum.

In all cases it is an important feature of the of silver and five per-The alloy is less subject by'acids than thev usual to tarnish goldalloys.

alloy is softer than white gold alloys and can be more easily worked,and yet is 'sufliciently hard to 30 and attack withstand wear and hasthe splinginessdesirable 40 and jewelry. The quality of white color ofthe alloy is superior to that of white gold. Having thus described ourinvention, what we aim is:

1. An alloy con aining from thirty-five to seventy percent of palladiumand platinum of which live to ten percent is platinum, the remainder ofthe alloy being silver 2. An alloy consisting of about forty-fivepercent of palladium, about fifty percent of silver and about fivepercent ofplatinum.

EDWARD A. CAPILLON.

msnnmc E. csa'ma. st

